Due to the actionscript changes in 8.8, this carousel is currently not being developed further.4lCapwn did a very nice job recreating this mod here: http://forum.worldof...ans-mod-for-88/
If someone wants to do it in AS3 here are some pointers:

Spoiler

I started by first reducing the size of the icons by putting halved values for slotImageheigth and width into the function call:
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this.drawLayout(108, 68);

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then I expanded the drawLayout function by adding conditional parameter switches for the positions. In short, every 2nd icon got placed below the one before, and only after that the next row would be placed:

There are some size corrections for better visibility of text elements in there, but I think you get the idea.
The Tier filter ist just a simple dropdown menu copy of the tank type filter. It triggerst a ​sc​ri​pt that iterates through the renderer list of icons looking for the tier number and setting the alpha value according to the selected tier:

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After that I had to edit the hangar.swf to make the carousel move a bit upwards. that was done in swfmill at the time, but could be done now in SWiX I think for AS3.
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The hardest part was modding the scrolling functions to reflect the changes made to the icon size. That was trial an error most of the time and took ages. Since these functions are different in AS3 now, you have to make it up as you go from here.

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Not much to say, just have a look:New Tier filter with version 8.5 b:>>DOWNLOAD<<Updated to 8.7:
- No significant changes, just folder rename.Updated to 8.5b version:
- Added sort of a Tank filter for Tiers (see image). :)Updated to 8.5a version.
- Removed the Tier VIII smudge making it appear as Tier VII.
- Increased the size of daily double marking.